CVE-2022-39339

Name: CVE-2022-39339
Creator: NVD / NIST
Published: 2022-11-25T19:15:11.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2022-39339 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. user_oidc is an OpenID Connect user backend for Nextcloud. In versions prior to 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

user_oidc is an OpenID Connect user backend for Nextcloud. In versions prior to 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. Any malicious actor with access to monitor user traffic may have been able to compromise account security. This issue has been addressed in in user_oidc v1.2.1. Users are advised to upgrade. Users unable to upgrade may use https to access Nextcloud. Set an HTTPS discovery URL in the provider settings (in Nextcloud OIDC admin settings).

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.42%

33.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nextcloud	Openid Connect User Backend	< 1.2.1

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vff-cq8h-chhgPatch, Third Party Advisory
https://github.com/nextcloud/user_oidc/pull/495Patch, Third Party Advisory
https://hackerone.com/reports/1687005Permissions Required, Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vff-cq8h-chhgPatch, Third Party Advisory
https://github.com/nextcloud/user_oidc/pull/495Patch, Third Party Advisory
https://hackerone.com/reports/1687005Permissions Required, Third Party Advisory

Timeline

Published: Nov 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-39339?

How severe is CVE-2022-39339?

CVE-2022-39339 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2022-39339?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-39339?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST